Migrate the rest symbolic analysis stuff to BasicConstraintManager.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@55536 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/CFRefCount.cpp b/lib/Analysis/CFRefCount.cpp
index 3ed4894..8ea8301 100644
--- a/lib/Analysis/CFRefCount.cpp
+++ b/lib/Analysis/CFRefCount.cpp
@@ -1905,7 +1905,7 @@
   for (RefBindings::iterator I=B.begin(), E=B.end(); I!=E; ++I) {    
     // Check if the symbol is null (or equal to any constant).
     // If this is the case, stop tracking the symbol.
-    if (St->getSymVal(I.getKey())) {
+    if (VMgr.getSymVal(St, I.getKey())) {
       changed = true;
       B = RefBFactory.Remove(B, I.getKey());
     }